Beide *Pfadoperationen* erfordern einen `X-Token`-Header.

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////

//// tab | Python 3.9+

```Python
{!> ../../docs_src/app_testing/app_b_an_py39/main.py!}
```

////

//// tab | Python 3.8+

```Python
{!> ../../docs_src/app_testing/app_b_an/main.py!}
```

////

Обе *операции пути* требуют наличия в запросе заголовка `X-Token`.

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////

//// tab | Python 3.9+

```Python
{!> ../../docs_src/app_testing/app_b_an_py39/main.py!}
```

////

//// tab | Python 3.8+

```Python
{!> ../../docs_src/app_testing/app_b_an/main.py!}
```

////

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

### Только современный Python

Все эти возможности основаны на стандартных **аннотациях типов Python 3.8** (благодаря Pydantic). Не нужно изучать новый синтаксис. Только лишь стандартный современный Python.

* `Annotated` from `typing` (or from `typing_extensions` in Python below 3.9)

//// tab | Python 3.10+

In Python 3.9 or above, `Annotated` is part of the standard library, so you can import it from `typing`.

```Python hl_lines="1  3"
{!> ../../docs_src/query_params_str_validations/tutorial002_an_py310.py!}
```

////

//// tab | Python 3.8+

In versions of Python below Python 3.9 you import `Annotated` from `typing_extensions`.

Auch wenn diese sich in unterschiedlichen Modulen (Python-Dateien) befinden.

///

## Von OpenAPI ausschließen

Um eine *Pfadoperation* aus dem generierten OpenAPI-Schema (und damit aus den automatischen Dokumentationssystemen) auszuschließen, verwenden Sie den Parameter `include_in_schema` und setzen Sie ihn auf `False`:

```Python hl_lines="6"
{!../../docs_src/path_operation_advanced_configuration/tutorial003.py!}

Bunu standart müasir Python tipləri ilə edirsiniz.

Yeni sintaksis, müəyyən bir kitabxananın metodlarını və ya siniflərini və s. öyrənmək məcburiyyətində deyilsiniz.

Sadəcə standart **Python**.

Məsələn, `int` üçün:

```Python
item_id: int
```

və ya daha mürəkkəb `Item` modeli üçün:

```Python
item: Item
```

## Импорт `Header`

Сперва импортируйте `Header`:

//// tab | Python 3.10+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an.py!}
```

## `Header` importieren

Importieren Sie zuerst `Header`:

//// tab | Python 3.10+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="3"
{!> ../../docs_src/header_params/tutorial001_an.py!}
```

import sys

import pytest
from fastapi._compat import PYDANTIC_V2

needs_py39 = pytest.mark.skipif(sys.version_info < (3, 9), reason="requires python3.9+")
needs_py310 = pytest.mark.skipif(
    sys.version_info < (3, 10), reason="requires python3.10+"
)
needs_pydanticv2 = pytest.mark.skipif(not PYDANTIC_V2, reason="requires Pydantic v2")

使用 Python `list` 可以接收重复请求头所有的值。

例如，声明 `X-Token` 多次出现的请求头，可以写成这样：

//// tab | Python 3.10+

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003_an_py310.py!}
```

////

//// tab | Python 3.9+

```Python hl_lines="9"
{!> ../../docs_src/header_params/tutorial003_an_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="10"